Tool.



P. H. GRUBR.

TOOL.

APPL'IoArIon FILED JAN. 2a. 1909.

Patented Nov. 9,'- 1909.

2 SHBETB--SHEBT 1.

W' S11/wanton F. H. GRUBR.

TOOL.

l 'i A APPLIOATION FILED JAH. 28. 1909- 9939,496. Patented Nov.9,19o9.

Z-SHBHTS-SHEET 2.

nmrnn srarn vTo all 'whom it may concern:

citizen of the Uni 5 State of California,

following is a speci This invention r for carpenters use l View a novel form tually co-acting members are employed to ascertain various measurements, angles, levels, etc., of the work.

With the.above and other objects in view l the invention embodies in its construction a supporting frame which serves as the head of a square and which carries a spirit level which may also be used as a plumb, and in combining with said head a pivoted square .26blade the upper portion of which has marked thereon a circle arc which cooperates Vwith a pointer to indicate the degree of the angle to which the blade i Tn practicing thel invention stated gcnerally almve,.various changes in details and structural arrangements may be resorted to, practical and preferred embodiments of which are shown in the accompanying drawin s, in which'- lgure l is a side elevation of the improved square showing the lpivoted blade in its closed position.

showing the blade swung to a position at an incline to the horizontal position of the head.- Fig. a sectional View taken on the line awa Fi .1. Fig@t on the ine 4 4:` Fig. 1. Figs. 'and 6 are views similar to Fig.l l, but showinga modication of the inve 4Q tional View taken on theline 7-7 of Fig.

' Like characters corresponding parts.

In the preferred vention shown in Figs. l and 2 of the acc0mpanying drawings, the head 10 of the square is composed of two side members 11-11 which are of duplicate construction and are .'held in spaced relat 'filler "strips 12, and

bemgretained in position fastening bolts 13-14 are employed which pas? through them. The lower portions of thefside members are provided sur ace for resting TOOL.

spciacaaon of Letters Patent.

fication.

elates to toolsadapted and has specially in of square in whih muclearly vih Fig. 2 of the holder is composed of are arranged at righta Fig. 2 isa similar view is a. sectional View taken ntion. Fig. 7 is a secreference designate embodiment of the inion by upper and lowerV to assure of such parts which, 'in conjunction with a] carried by the upper corner ot one of the side members of the head, serves to ascertain accurately the angle at which the blade holder is setrelatively to said head. It will be understood that scribed spaced arrangement of the side members of the head, the blade holder swings out and in between the me ibers thereof, rand as said members and to a certain extent resilie 1s contemplated employing a bi 28 .which passes through each member at their upper corner and below t movement of the blade holder, coperates a screw lever 29 which 'will serve to ydraw said members togeth them to bind upon the blade thereby retain it in .any desired sition relatively to said head.'

The pivotal member holder 21Y formed oi tw 31 the inner face of one oi. which vided with a longitudinal which is preferably loc the center thereof. .The inner edge of said Side members have threaded sockets 33 for with outturned rest thelreception of a binding screw 84 adapted flan Yes l5`16, which provide a [iat s1 ooth to engage with one edge of a square blade on the work.` The said 36 which is provided with a guiding"I groove s PATENT orme.

l Y Patented Nov. El, 1909.

Application filed January 28, 1909.A Serial No. l174,645. g I

head isl preferably formed of sheet metal Be 1t known that I, FRANK. H. QRUER, a and in order to decrease the weight of the ted States, residing at same, openings are formed .therethrough Oakland, in the county of Alameda and Awhich may be ofthe ornamental characters have invented 116W and. as shown inthe said 'Figs l and 2. Aduseful Improvements in Tools, of which the jacent to one end of the head a semicircular i opening 17 is formed through both side .members the base of which is made in the form of' a pocket 18 to receive therein a spirit level 1.9. tion of the head carries a erably located in its lower which serves to-hold a pivotal relation thereto;

and yhold The other end porpivot bolt 20, prefco1'ner, and blade holder 2l in As shown more drawings, said blade two members which ngles to one ano the lower one 22 being the pivoted me the upper 'one 23 .being turned stop flanges 24, which engage with an upper recessed portion 25 formed in the head and thcreliv limit the inward swing of the holder. One-surface oi the upper member has an arc scale 26 which is concentric tothe pivotal point ofsaid blade h through the deare o thin, nt metal, 1t ndmg screw' he path ot' with which 22 oi the blade o side plates 30- guiding fiange 32, ated -io one side of older, and )ointer 27 ther, Y mber, provided with outer to cause holder and angular po-v otal connection of the blade holder withthe head of the square it is possible to swing the former to various ano'les, and through` the described indicating feature ofthe invention, the degree of such angles may be readily, ascertained. `And through the described guiding and holding means for the -square blade within the blade holder, itis possible to adjust the former longitudinally relatively to the holder, the advantages of which. will be obvious.

Another rominentifeature of the invention is in t e 'described form of mounting the spirit level between theA two members of .the head, which provides for the same being readily used either as a level `or a plumb.

In the modification of the invention suggested in Figs. 5, G and 7 of the accompanying drawings the invention preserves the same general features ofV the preferred ernbodiinent set forth in Figs. 1 to 4 inclusive in so far as the mounting of the spirit level betweenthe two spaced apart anged side members of the head, the pivotal mounting of the blade, and the clamping feature of i the upper corners of the side members which engage with and retain the blade 1n various adpisted posltions 1s concerned. yThe distinctive features of this form of the invention are embodied in the blade 38 the upper end of which is in the form of a quarter of acircle 39 and which is concentric to the pivotal point of the blade and which has an arc scale 41 thereon, which cooperates with an upper pointer 42 carried by one of the side members of the head to indicate the angular degree of the blade relatively to the head.- Preferably the outer edge of one of the members of the head has a recess 43 formed therein which receives a stop lng 44 carried by the blade to limit inward swing of the latter.

lVhat I claim is A tool of the character described compris ing spaced apart side members provided with bottom flanges and an upper pointer, a blade holder pivotally mounted between said members and having a circle. scale marked thereon which cooperates with said pointer to indicate the angular degree of said blade holder, a blade carried by said blade holder, means for limiting the inward swing of said blade holder, and means for clamping the blade holder between said members.

In testimony whereof, I affix my signature.

in presence of two witnesses.

FRANK H. GRUER.

Witnesses HARDY C. HU'rcluNsoN, Vennen I. l-nviN. 

